Sources such as diaries though not very reliable can be used if there are a large amount of them showing the same date and event. Historical books written about the event especially those closer to the time would be able to help determine that the date is accurate as well.
Answer: if two-thirds of both houses override the veto
Explanation: Once the governor receives a bill, he can sign it, veto it, or do nothing. ... If he vetoes the bill, and the Senate and House of Representatives do nothing, the bill “dies. “ If he vetoes the bill and the Senate and the House of Representatives attempt to over-ride the veto, the bill may still become law.
I don't get your question
It was outlawed in 1804, and it not only declared the colonies free of Britain but it helped to inspire Vermont to abolish slavery in its 1777 state constitution. Hope this helps.
